Perform simple arithmetic operations instantly — addition, subtraction, multiplication, and division. Free online basic calculator with memory functions, percentage calculations, and keyboard shortcuts. Perfect for everyday math.
⌨️ Keyboard supported • Enter to calculate • Esc to clear
So, you need a basic calculator. Maybe you're doing homework, budgeting your money, or just trying to figure out a tip at a restaurant. Whatever it is, you've come to the right place.
Our free online basic calculator does exactly what you'd expect. It adds, subtracts, multiplies, and divides. No fancy stuff. No scientific functions you'll never use. Just simple, fast math.
But here's the thing. Even a basic calculator has some tricks up its sleeve. Most people only use about 10% of what it can do. We're going to change that.
A basic calculator is the simplest type of calculator. It's the one you probably used in elementary school. It has buttons for numbers (0-9), a decimal point, and the four main operations: +, -, ×, and ÷.
Most basic calculators also have a few extra buttons like:
For percentages
For square roots
Memory functions
Clearing entries
That's it. No trigonometry. No logarithms. No graphing. Just the basics.
Who uses a basic calculator? Pretty much everyone. Students use it for math homework. Adults use it for budgeting, shopping, and cooking. Even professionals use it for quick calculations at work.
Just go to CalculatorWallet.com and find the basic calculator. It's right there on the page. No downloads. No sign-ups. Just click and go.
Click the number buttons to enter your first number. For example, if you want to add 5 and 3, click "5" first.
Click the operation button you need. For addition, click "+". For subtraction, click "-". For multiplication, click "×". For division, click "÷".
Click the second number. For our example, click "3".
Click the "=" button. The answer will appear on the screen. For 5 + 3, you'll see "8".
That's it. You just did math.
Let's look at some real situations where you'd use a basic calculator.
Most people just use the basic functions. But there are some hidden features that can save you time.
This is a game-changer. The memory function lets you store a number and use it later. Here's how it works:
Adds to memory
Subtracts from memory
Recalls from memory
Clears memory
Let's say you're adding up a bunch of numbers. Instead of writing them down, you can use the memory function.
Example: You have expenses of $15, $22, $8, and $30.
Enter 15, then press M+. Enter 22, then press M+. Enter 8, then press M+. Enter 30, then press M+.
Now press MR. You'll see the total: $75. It's that simple. No need to write anything down.
The percent button is super useful. It automatically calculates percentages for you.
Example: What is 15% of 200?
Enter 200, then press ×, then enter 15, then press %. You'll see 30. That's 15% of 200. Easy.
If you're using our online calculator on a computer, you can use your keyboard. Just type the numbers and operations. It's faster than clicking.
Everyone makes mistakes with calculators. Here are the most common ones and how to fix them.
Mistake 1: Forgetting to Clear
You're doing a calculation, and you make a mistake. You press a wrong number. But you don't clear it. Then you get a wrong answer.
Fix: Always press the "C" or "CE" button before starting a new calculation. This clears the previous entry.
Mistake 2: Wrong Order of Operations
Basic calculators don't follow the order of operations (PEMDAS). They do calculations in the order you press them. Example: You want to calculate 2 + 3 × 4. On a basic calculator, if you press 2 + 3 × 4 =, you'll get 20. But the correct answer is 14 (because multiplication comes first).
Fix: Do multiplication and division first, then addition and subtraction. Or use a scientific calculator that follows PEMDAS.
Mistake 3: Pressing the Wrong Button
You're in a hurry, and you press ÷ instead of +. Now you're dividing when you wanted to add.
Fix: Double-check your entries before pressing =. If you make a mistake, press "C" and start over.
For simple math. Addition, subtraction, multiplication, division. Perfect for everyday tasks like budgeting, shopping, and homework.
Has more functions. Trigonometry, logarithms, exponents, and more. For advanced math like algebra, calculus, and physics.
So, which one do you need? If you're just doing basic math, stick with the basic calculator. If you're doing advanced math, go with the scientific calculator.
Did you know the first electronic calculator was invented in 1961? It was called the ANITA Mark VII. It weighed about 33 pounds and cost around $1,000.
Today, you can use a basic calculator online for free. It's faster, lighter, and more accurate than those old machines.
Another fun fact: The word "calculator" comes from the Latin word "calculare," which means "to count." The first calculators were actually abacuses used by ancient civilizations.
Rotate your phone to landscape mode for a bigger display
Use your finger to tap the buttons
If you make a mistake, use the backspace button (if available) or clear and start over
Our calculator works on any device. Desktop, laptop, tablet, or phone. It's designed to be easy to use no matter what.
It's free
No ads, no sign-ups, no hidden fees.
It's fast
No loading times. No waiting.
It's reliable
Tested thoroughly. Works every time.
It's easy to use
Big buttons. Clear display.
So, give it a try. You'll be glad you did.
It's easy. Press M+ to add the current number to memory. Press M- to subtract it. Press MR to recall the number. Press MC to clear the memory. This is great for adding up a list of numbers without writing them down.
Basic calculators don't follow the order of operations (PEMDAS). They do calculations in the order you press them. So if you type 2 + 3 × 4, you'll get 20 instead of 14. To fix this, do multiplication and division first, then addition and subtraction.
Use the percent button. For example, to find 15% of 200, enter 200, press ×, enter 15, then press %. You'll see 30. That's 15% of 200. You can also use it for discounts and tips.
A basic calculator does simple math: add, subtract, multiply, divide. A scientific calculator does advanced math like trigonometry, logarithms, and exponents. Use a basic calculator for everyday tasks. Use a scientific calculator for school or work that involves complex math.
Press the MC button. This clears all numbers stored in memory. If your calculator doesn't have an MC button, try pressing MR and then M- to subtract the number from memory. Or just turn the calculator off and on again.
You can use it for simple algebra, like solving for x in basic equations. But for more complex algebra, you'll need a scientific calculator. A basic calculator can't handle variables or exponents.
Look for the √ button. Enter the number you want the square root of, then press √. For example, enter 9, then press √. You'll see 3. That's the square root of 9.
This usually happens when you try to divide by zero. Basic calculators can't divide by zero. It's mathematically impossible. Just clear the calculator and try again with a different number.
Add up all your expenses using the memory function. Enter each expense, then press M+. When you're done, press MR to see the total. Subtract that from your income to see how much you have left.
Yes. Use it to scale recipes. If a recipe serves 4 and you need to serve 6, divide 6 by 4 to get 1.5. Then multiply each ingredient by 1.5. For example, 2 cups of flour × 1.5 = 3 cups.
First, find the discount amount. Multiply the original price by the discount percentage. For example, $80 × 25% = $20. Then subtract that from the original price: $80 - $20 = $60. You'll pay $60.